Develop Bugs

GPS fix?

My GPS wont fix and is terrible! I'm using the latest cyanogen mod nightly
I'm thinking about going to a older froyo sense rom, what's the best to go to if there isn't a fix available?
If there is a fix could someone point me in the right direction I can't seem to find it
Thanks
Sent from my Desire HD using XDA App

What radio are you using?
I am using 12.28e.60.140fU_26.04.02.17_M2 iirc.
I had a bit of trouble getting the initial fix once, but I just switched GPS off then back on, then opened Maps and waited for it to get that initial fix. After that, it was fine! Locks on really fast

radio 12.35d.60.140fU_26.08.03.07_M
Just flashed it but GPS never worked properly on any of the cm7s, when it did fix it would lose it every so often

Have you tried this: http://forum.xda-developers.com/showthread.php?t=989578

No luck still

here's what's worked for me on cm7 (i'm currently using 26.04.02.17_M2_SF but i've tried several different radios, they all work fine):
assuming that you have the correct country selected within gps.conf...
1. wipe delvik cache in recovery and reboot
2. ensure that you have either wifi or mobile network on. and of course, turn gps on.
3. download gps status from market and run it
4. within gps status, menu>tools>manage a-gps state>reset
5. within gps status, menu>tools>manage a-gps state>download
6. wait for it to get a fix (it can take anywhere between 10 seconds to a couple of minutes). the important thing here is to keep an eye on "Fix/Sats.". you should see this number start to increase as your gps starts to get a fix on different satellites. if you don't see any change in this, your gps is not getting a fix. reboot and try again.
forgot to mention...every time i reboot the phone, i have to run gps status again to get a fix. kinda annoying but better than the alternative (i.e. no gps). i hope this helps.

[Q] GPS problem - very strange

I have a GPS problem, and despite reading a number of the threads in the forum and trying the usual fixes (downloading GPS Status, clearing downloaded data, re-downloading A-GPS data, factory reset, upgrading to 2.3.3 etc...) I still figure out what's wrong.
Symptoms are:
I do have a GPS icon in the task bar in the apps where I would expect it appear
I never get a lock
Both GPS Status and GPS Test seem to indicate I have *no* signal from any sats
I am outside when I try this
aLogcat seesm to show no NMEA data, though I've never read a logcat entry for working GPS, so I'm guessing a bit here. It does show GPS start up and shutdown lines however
It didn't work in 1.84, when I downgraded, and it still doesn't work in 2.3.3 - seems to be version independant!
Does anyone have any bright ideas? It's really irritating. As a side note, the phone isn't rooted (as I forgot to S-off when I upgraded to 2.3.3) though it could be downgraded fairly easily if there was a good reason to do it...
Thanks!

If it has never worked and you have wiped the device, re-installed etc....
Then I would guess that it may be a defective unit...

markya23 said:
I have a GPS problem, and despite reading a number of the threads in the forum and trying the usual fixes (downloading GPS Status, clearing downloaded data, re-downloading A-GPS data, factory reset, upgrading to 2.3.3 etc...) I still figure out what's wrong.
Symptoms are:
I do have a GPS icon in the task bar in the apps where I would expect it appear
I never get a lock
Both GPS Status and GPS Test seem to indicate I have *no* signal from any sats
I am outside when I try this
aLogcat seesm to show no NMEA data, though I've never read a logcat entry for working GPS, so I'm guessing a bit here. It does show GPS start up and shutdown lines however
It didn't work in 1.84, when I downgraded, and it still doesn't work in 2.3.3 - seems to be version independant!
Does anyone have any bright ideas? It's really irritating. As a side note, the phone isn't rooted (as I forgot to S-off when I upgraded to 2.3.3) though it could be downgraded fairly easily if there was a good reason to do it...
Thanks!
Click to expand...
Click to collapse
1. are you running custom roms? if so which?
2. have you updated your radio and made sure that the RIL is matching?

goofylad said:
1. are you running custom roms? if so which?
2. have you updated your radio and made sure that the RIL is matching?
Click to expand...
Click to collapse
1. Nope. The stock 2.3.3 RUU and before that the UK T-Mobile Stock 1.84 ROM.
2. Stock only, so standard RIL.
shaithis said:
If it has never worked and you have wiped the device, re-installed etc....
Then I would guess that it may be a defective unit...
Click to expand...
Click to collapse
That is my fear. It did work when I first got it, but it now doesn't on any ROM. Unfortunately I can't quite work out what changed...
If this is the problem, does anyone know a way to get back on the T-Mobile official ROM so i can take it back to the shop?

Hi there, Your best bet would be to try and downgrade, root and flash a matched ROM, RIL & radio to retest. This happened to me a while back and this was the only thing that sorted it. CoreDroid has been particularly good for GPS on my DHD, hope this helps

rory1980 said:
Hi there, Your best bet would be to try and downgrade, root and flash a matched ROM, RIL & radio to retest. This happened to me a while back and this was the only thing that sorted it. CoreDroid has been particularly good for GPS on my DHD, hope this helps
Click to expand...
Click to collapse
Yeah - I tried the Coredroid rom - no dice. Think that confirms it's hardware. Back to stock and then back to the shop for this one.
I heard rumours that early DHDs were flaky for GPS. Guess that confirms it for me...

Had exactly the same problem with mine after using the gingerbread ROM from here http://forum.xda-developers.com/showthread.php?t=1056329
Are there different versions for different countries? Maybe this only works in the US or something? I'm guessing here!
Are there different stock ROMS for different countries/ networks? I didn't write down the version numbers before updating

Another GPS Problem

Hey guys,
Don't shoot me, I've already done the research and still can't seem to find an answer. Regardless of ROM I can't get GPS to find any satellite's, fresh root, SR4.2, Synergy RC2, CM7 nightly, MIUI, Virtuous. I unrooted to see if it was a possible hardware issue, which it isn't as an unrooted phone gives me fast locks onto whatever sat is near. GPS Status shows nothing in the sky even after a A-GPS reset and download, although I know there's always at least 3 that are visible. I've tried clearing cache for any gps based app, tried running fresh rom installs instead of backups all with no luck. Any ideas guys?
Currently I'm running:
ROM - SR 4.2
Baseband - 2.15.00.07.28
Kernel - Stock Kernel from SR4.2 (2.6.32.17-g9a2fc16 htc-kernel[email protected] #1
PRL - 52341
HW Version - 0002
CWM - 3.0.0.7
HBoot - 0.92.0000
Radio - 2.15.00.07.28

Looks like I'm stuck going back to stock unrooted until I can get this fixed.

I'm having the exact same problem. Tried multiple roms and doing A-GPS resets. I'm not sure what else to try, anyone have any other ideas? May have to unroot for now so I can use GPS while traveling.

nate23 said:
I'm having the exact same problem. Tried multiple roms and doing A-GPS resets. I'm not sure what else to try, anyone have any other ideas? May have to unroot for now so I can use GPS while traveling.
Click to expand...
Click to collapse
If you are in NY or other new 4g area it may be related to a problem others are having with AGPS upate VZW pushed. No ROM seems to work.

yep, it was an issue with New York. We drove to Boston on Sunday, I tried clearing my A-GPS in western Massachusetts and suddenly got a lock on GPS! Google maps then worked perfectly all the way to Boston.

Well there is no way I'm giving up root or custom roms, Google or Verizon need a better solution than that.

I actually fixed mine and never left NY, I dropped to stock then went back to SR 4.3 and haven't had a problem since, and I've flashed 3.0 roms and SR 4.3 multiple times with no problem. So if you're still having a problem unroot then reroot. It should fix it.

[Q] GPS position 260km wrong

Hey!
I looked everywhere to find a solution to my GPS that's not working and ended up with this thread, where crypted offers a scripted solution, including the agps solution, using the NTP servers.
I selected the Google Build and after a Restart, the GPS locked and I was happy!
But unfortunately, it locked 260km away from my position :-/
I know that some users already experienced similar problems, but I couldn't find any solution yet.
Did I miss something?

try reading this :
http://forum.xda-developers.com/showthread.php?t=1447593
and also try this one :
http://forum.xda-developers.com/showthread.php?t=1392466

b02 said:
try reading this :
http://forum.xda-developers.com/showthread.php?t=1447593
and also try this one :
http://forum.xda-developers.com/showthread.php?t=1392466
Click to expand...
Click to collapse
Hey!
These are two of the solutions I tried, first the scripted one (I actually wanted to post this link but I accidentally took an other ^^) and then the other one.
There was no change, I also think, that both describe a similar way to solve it.
Right now, I saw, that there are two gps.conf files, one in /etc/gps.conf and one in /system/etc/gps.conf, but I don't think that this is the problem..
BTW: Heres the GPS Status - there are no Satellites showing up, is this normal?

Saftpackl said:
Hey!
These are two of the solutions I tried, first the scripted one (I actually wanted to post this link but I accidentally took an other ^^) and then the other one.
There was no change, I also think, that both describe a similar way to solve it.
Right now, I saw, that there are two gps.conf files, one in /etc/gps.conf and one in /system/etc/gps.conf, but I don't think that this is the problem..
BTW: Heres the GPS Status - there are no Satellites showing up, is this normal?
Click to expand...
Click to collapse
well, try with this too :
4. This works with ANY ROM unless the ROM has aGPS and/or GPS disabled in the code. This happens with CMx nightlies and some betas! I cannot fix this, neither can you.
9. CMx ROM users may not experience benefits from this patch. However, we have had good reports from CM users with one negative one. Remember to do all of the steps when flashing and the following notes are important too!
11. Reports show that certain ROM's including some CM builds require a modification in the build.prop. You need to change "ro.ril.def.agps.mode = 2" or "ro.ril.def.agps.mode = 0" to be "ro.ril.def.agps.mode = 1" in order for aGPS to properly function. Only do this IF YOU ARE HAVING PROBLEMS after attempting the standard patch.
the 11 one may get it to work ... ?

b02 said:
well, try with this too :
4. This works with ANY ROM unless the ROM has aGPS and/or GPS disabled in the code. This happens with CMx nightlies and some betas! I cannot fix this, neither can you.
9. CMx ROM users may not experience benefits from this patch. However, we have had good reports from CM users with one negative one. Remember to do all of the steps when flashing and the following notes are important too!
11. Reports show that certain ROM's including some CM builds require a modification in the build.prop. You need to change "ro.ril.def.agps.mode = 2" or "ro.ril.def.agps.mode = 0" to be "ro.ril.def.agps.mode = 1" in order for aGPS to properly function. Only do this IF YOU ARE HAVING PROBLEMS after attempting the standard patch.
the 11 one may get it to work ... ?
Click to expand...
Click to collapse
I tried that already (also tried different config layouts), but unfortunately, it changed nothing.
Isn't the aGPS just for finding the nearest satellites faster? So, it seems, that aGPS is finding the wrong position (maybe because of some NTP servers?) and that the normal gps still isn't even working (because I tried to get GPS running since I flashed CM7)..
Hmmm..

Saftpackl said:
I tried that already (also tried different config layouts), but unfortunately, it changed nothing.
Isn't the aGPS just for finding the nearest satellites faster? So, it seems, that aGPS is finding the wrong position (maybe because of some NTP servers?) and that the normal gps still isn't even working (because I tried to get GPS running since I flashed CM7)..
Hmmm..
Click to expand...
Click to collapse
i guess it's not working, somehow, since you can't find ANY satellite
did you try any other rom, and did gps work when u were stock ?

^^
Yes, it worked on stock rom, and i believe it also did on another (maybe Mindhaxors ROM)
But I like CM very much and would prefer not having to change, these are like two worlds for me since I tried it out ;-)

I had the same issue, using CM7 nightly. I applied the patch and GPS was showing a fixed location far away from actual location. Then I tried a combination of using another app (GPS test instead of GPS status), calibration of compass (rotating in all three axes a cuple of times) and removal of AGPS data and GPS started to work in gps test as well as on google maps. After reboot however I was not able to reproduce it. Now I don't have any fix..I'll try it tomorrow, maybe I'll have more luck.

make nand backup and try full factory reset clean dalvik cache and stuff, and reflash... try it even with new sd card or just some clean one...
p.s. flash latest nightly, or 14th january one, since it's tested ;-)
Sent from my HTC Wildfire using xda premium

I have the same issue:
CM72, GPS fix various methods tried out as in the topics linked, get "too" fast fix within minuted but around 400km away ;-( Any idea what else could be done???

Yes. Wait for sat locks and position update the first time and try not to get bored and quit. It well find you eventually and subsequent location updates will be faster...Might take 10 min or so.
Sent from my cm7.2 Wildfire S

I also have the same kind of prolem.
I tried every solution adviced but my gps is stuck to 46°59.999N and 3°59.999E.
i am with cm 7.2 and my gps workswhen i install a stock rom.
thank u in advance
img851.imageshack.us/img851/1448/screenshot1329031958236.png

I think I might be having the same problem, in my case after applying GPS patches the location returned by GPS was constant (and far away from my actual location). I am yet to understand and fix it, but I think I'm getting closer
UPDATE @estantor - yep I'm having the same issue, the GPS is either stuck at exactly the same coordinates, or lately it stopped locking on to the satellites

those are the exact coordinates where my CM72 GPS is also stuck, in the middle of nowhere in France.
Really strange, I wonder if flashing a more recent CM72 update might help?
UPDATE: DId a new flash with CM72 RC0, applied the fix and now its fast and correct ;-)!!!

playagiron said:
those are the exact coordinates where my CM72 GPS is also stuck, in the middle of nowhere in France.
Really strange, I wonder if flashing a more recent CM72 update might help?
UPDATE: DId a new flash with CM72 RC0, applied the fix and now its fast and correct ;-)!!!
Click to expand...
Click to collapse
did you install the latest nighly build? i'm still stuck :-/
which fix exactly did you apply?
Edit: GPS is working after I installed m1ndh4x0rs ROM where it worked before and reverting to my previous backup (CM7) it still shows the wrong location, though, when GPS has a weak or no signal

[Q] BlackIce 1.27 GPS lost lock

Since I changed to BlackIce 1.27 from RcMix3D4.0 I have been able to get near instant GPS locks, but after 2-5mins I lose GPS in google navigation. If I restart the program it works again for 2-3mins...
Things I have tried:
Changing the GPS settings in IceTool & using GPS stats to download new gps data
Full wipe and fresh re-flash
Differnet RILs from Icetool
Flashing several different agps builds
What I would like to try:
Can I flash the gps.spade.so from one of my working ROMs (RCMix3D4.0, HTC Froyo, ARHD6.3.1) to BlackIce 1.27?
I am loving this ROM, I have my battery and performance just where I want them so I really don't want to change it (or change it as little as possible).
Thank you in advance for your help.

have you tryed flashing the gps and see if that helps you
http://forum.xda-developers.com/showthread.php?t=1252011&highlight=fast+gps

karma_ownz said:
Since I changed to BlackIce 1.27 from RcMix3D4.0 I have been able to get near instant GPS locks, but after 2-5mins I lose GPS in google navigation. If I restart the program it works again for 2-3mins...
Things I have tried:
Changing the GPS settings in IceTool & using GPS stats to download new gps data
Full wipe and fresh re-flash
Differnet RILs from Icetool
Flashing several different agps builds
What I would like to try:
Can I flash the gps.spade.so from one of my working ROMs (RCMix3D4.0, HTC Froyo, ARHD6.3.1) to BlackIce 1.27?
I am loving this ROM, I have my battery and performance just where I want them so I really don't want to change it (or change it as little as possible).
Thank you in advance for your help.
Click to expand...
Click to collapse
this is a problem for every CM7 based roms.
the only way for it to lock all the way to ur destination is by...
(when GPS stops moving)
1. turn off GPS
2. turn on GPS

You are absolutely certain that you've turned on GPS in the location and security tab
in 'settings' ? I've had a similar issue with Blackice with Navigon, and it turned out that
i needed to turn on GPS for localisation on street level.
After that no more issues.

Problem is fixed but I'm not sure how.
I restored my RCMix3D 4.0 backup copied system/lib/hw/gps.spade.so to SD. Restored my Blackice 1.27 copied the file from the SD to the system/lib/hw.
It didn't work straight away so I re-flashed AGPS found on Xda (thank crypted). Now no loss at all, and quick lock times.
Strangely before multiple attempts of using AGPS did nothing..
My main initial question was really can I copy gps.spade.so across? What dose it do?